ascension ascension /əˈsɛnʃən/

noun

1. The act of changing location in an upward direction  ( ascending , ascension , ascent , rise )
   the act of changing location in an upward direction
     The sun began to rise, painting the sky with vibrant colors.
   The sun began to rise, painting the sky with vibrant colors.
   
2. (astronomy) the rising of a star above the horizon  ( ascension )
   (astronomy) the rising of a star above the horizon
   
3. A movement upward  ( ascension , ascent , rising , rise )
   a movement upward
    They cheered the rise of the hot-air balloon
   they cheered the rise of the hot-air balloon
   

 Ascension

1. (New Testament) the rising of the body of Jesus into heaven on the 40th day after his Resurrection  ( Ascension , Ascension of Christ , Ascension of Jesus )
   (New Testament) the rising of the body of Jesus into heaven on the 40th day after his Resurrection
   
2. (Christianity) celebration of the Ascension of Christ into heaven; observed on the 40th day after Easter  ( Ascension , Ascension Day , Ascension of the Lord )
   (Christianity) celebration of the Ascension of Christ into heaven; observed on the 40th day after Easter